- 10 Common Allergy Triggers Slideshow Pictures
- Take the Quiz on Allergies
- Nasal Allergy Relief Products Slideshow
Does Periactin (cyproheptadine) cause side effects?
Histamine is released by cells of the body during several types of allergic reactions and, to a lesser extent, during some viral infections, such as the common cold. When the histamine binds to receptors on other cells, it stimulates changes within the cells that lead to the release of chemicals that cause sneezing, itching, and increased production of mucus.
Antihistamines compete with histamine for cell receptors and bind to the receptors without stimulating the cells. In addition, they prevent histamine from binding and stimulating the cells. Cyproheptadine also blocks the action of acetylcholine (anticholinergic effect) and serotonin, two neurotransmitters that nerves and muscles use to communicate with one another, and it causes drowsiness.
Common side effects of cyproheptadine include
- numbness and tingling,
- fast heartbeats,
- high or low blood pressure,
- loss of appetite,
- blurred vision,
- double vision,
- ringing in the ears,
- urinary retention,
- wheezing, and
- stuffy nose.
Serious side effects of cyproheptadine include
Drug interactions of cyproheptadine include
- tricyclic antidepressants, and
- high blood pressure (hypertension) medications that can cause sedation because cyproheptadine adds to the sedating effects.
Cyproheptadine also can intensify the drying effects on moist tissues (such as the eye or mouth) of other medications with anticholinergic properties such as dicyclomine, bethanechol, and probanthine.
Studies in women who are pregnant have not shown that cyproheptadine harms the fetus during the first, second and third trimesters of pregnancy. However, these studies do not exclude the possibility of harm. Cyproheptadine should be used during pregnancy only if it is clearly needed.
What are the important side effects of Periactin (cyproheptadine)?
Side effects of include:
- Fast heart beat
- High or low blood pressure
- Blurred vision
- Double Vision
- Ringing in the ears
- Urinary retention
- Nasal stuffiness
Other side effects that have been reported include:
- Early menses
- Dryness of mouth, nose, and throat
- Facial dyskinesia
- Tightness of chest
Antihistamines may reduce mental alertness, however, they may occasionally produce excitation in children.
Patients should be warned about driving a car or operating machinery and participating in other activities that require mental alertness and motor coordination.
Antihistamines are more likely to cause
Periactin (cyproheptadine) side effects list for healthcare professionals
Adverse reactions which have been reported with the use of antihistamines are as follows:
Central Nervous System
Sedation and sleepiness (often transient), dizziness, disturbed coordination, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, paresthesias, neuritis, convulsions, euphoria, hallucinations, hysteria, faintness.
Urinary frequency, difficult urination, urinary retention, early menses.
Dryness of nose and throat, thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness.
Periactin (cyproheptadine) is an oral antihistamine used to treat allergic reactions and the skin manifestations of allergic reactions. Histamine is released by cells of the body during several types of allergic reactions and, to a lesser extent, during some viral infections, such as the common cold. Common side effects of cyproheptadine include drowsiness, sedation, dizziness, restlessness, insomnia, tremors, euphoria, nervousness, irritability, numbness and tingling, weakness, palpitations, fast heartbeats, high or low blood pressure, loss of appetite, nausea, vomiting, diarrhea, constipation, cholestasis, hepatitis, eczema, itching, blurred vision, double vision, ringing in the ears, urinary retention, wheezing, and stuffy nose. Cyproheptadine should be used during pregnancy only if it is clearly needed. It is unknown if cyproheptadine is excreted in breast milk.
Multimedia: Slideshows, Images & Quizzes
Could I Be Allergic? Discover Your Allergy Triggers
Allergies are an overreaction of the immune system where the body's defenses react to substances such as pollen, food and more....
Celiac Disease: Symptoms, Gluten in Foods, Gluten Allergy Tests, and More
Do you suffer from celiac disease? Learn about diet, symptoms, diagnosis, and treatments for this digestive disorder that occurs...
Nasal Irrigation: Natural Relief for Cold & Allergy Symptoms
Clogged sinuses and congestion bothering you? Nasal irrigation can relieve sinus symptoms associated with colds and allergies....
Allergies: Common Plants and Trees That Trigger Allergies
Find out more about which plants and trees might be producing pollen that is causing your itchy eyes and a runny nose.
Allergies Quiz: Symptoms & Home Remedies
What are the causes of allergies? This online quiz challenges your knowledge of common food and household allergens,...
Allergies: 10 Ways to Reduce Mold Allergies
WebMD shows you 10 ways to fight the fungus and reduce mold allergy symptoms from dust masks to bottles of bleach.
Picture of Allergic Contact Dermatitis
A red, itchy, weepy reaction where the skin has come into contact with a substance that the immune system recognizes as foreign....
Picture of Eye Allergies
Severe allergic eye symptoms can be very distressing and are a common reason for visits to the allergist or ophthalmologist. See...
Picture of Allergic Reaction to Lipstick Tattoo
Some people develop allergic reactions to tattoo pigments -- especially red pigments. See a picture of Lipstick Tattoo Allergic...
Picture of Tattoo Allergic Reaction
Exuberant blistering reaction in red tattoo pigment. See a picture of Tattoo Allergic Reaction and learn more about the health...
Picture of Photoallergic Reaction
An allergic reaction caused by drugs in which ultraviolet exposure changes the structure of the drug so that it is seen by the...
Picture of Allergic Contact Dermatitis (Tattoo)
Contact allergy to temporary tattoos has become an increasingly common phenomenon. See a picture of Allergic Contact Dermatitis...
Picture of Allergic Contact Dermatitis (Arm)
Allergic contact dermatitis (reaction to temporary tattoo). Contact allergy to temporary tattoos has become an increasingly...
The Most Common Food Allergies for Kids and Adults
What common food allergens cause the most problems for adults and children? See this list of common food allergies and learn to...
Out-of-Control Allergy Symptoms: Treatment Relief in Pictures
Learn 10 signs your allergies are out of control. See these surprising allergy symptoms and find out how to get relief for...
Nasal Allergy Attack: Causes, Triggers, Treatments
Nasal allergies are a common problem that affects millions of people. An allergist can recommend the best allergy nasal sprays...
Allergy: Life-Threatening Allergy Triggers
From insect stings to nuts and fish, WebMD shows you what can trigger anaphylaxis, a severe allergic reaction, and how to be...
Pictures of Allergy Relief Tips at Home: AC Filters, Electronic Air Cleaners, and More
Learn how a combination of medication, preventing allergens, and allergy relief products can reduce allergy symptoms and help you...
When Animal (Allergies) Attack: Pet Allergy Symptoms, Treatment
How do you control and relieve pet allergies? How do you prevent pet allergies? Learn dog and cat allergy symptoms, the cause of...
10 Worst Cities for Spring Allergies With Pictures
See pictures of the top 10 "spring allergy capitals", according to the Asthma and Allergy Foundation of America (AAFA). From...
Allergies: Myths and Facts About Seasonal Allergies
Do deserts prevent allergies? What can allergies do to your body? What is an allergen? Adult allergies can pop up unexpectedly,...
Home Allergy Quiz: Is Your Home Allergy-Proof?
Take this home allergy quiz and test your knowledge on allergens, dust mites, pollens and more to see how allergy-proof your home...
Managing Severe Allergies at School
Learn how to manage and be prepared for severe allergies at school. Discover how to protect you child from food allergies, insect...
Top 13 Ways to Tame Eye Allergies
Eye allergies, or allergic conjunctivitis, cause itchy eyes and other allergic symptoms. Avoiding allergens and using medicated...
Related Disease Conditions
An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. When these allergens come in contact with the body, it causes the immune system to develop an allergic reaction in people who are allergic to it. It is estimated that 50 million North Americans are affected by allergic conditions. The parts of the body that are prone to react to allergies include the eyes, nose, lungs, skin, and stomach. Common allergic disorders include hay fever, asthma, allergic eyes, allergic eczema, hives, and allergic shock.
COVID-19 vs. Allergies
Though there is some overlap in allergy and COVID-19 signs and symptoms there are also significant differences. Symptoms that they have in common include headache, fatigue, tiredness, shortness of breath, wheezing, and sore throat. Fever does not occur with allergies but is one of the defining symptoms of COVID-19 infections.
Eye allergy (or allergic eye disease) are typically associated with hay fever and atopic dermatitis. Medications and cosmetics may cause eye allergies. Allergic eye conditions include allergic conjunctivitis, conjunctivitis with atopic dermatitis, vernal keratoconjunctivitis, and giant papillary conjunctivitis. Dry eye, tear-duct obstruction, and conjunctivitis due to infection are frequently confused with eye allergies. Eye allergies may be treated with topical antihistamines, decongestants, topical mast-cell stabilizers, topical anti-inflammatory drugs, systemic medications, and allergy shots.
Indoor allergens are substances that can cause an allergic reaction in some people. Common sources of indoor allergens include dust mites, cockroaches, molds, pets, and plants. Avoiding indoor allergens is one way to reduce allergy and asthma symptoms.
Fragrances and preservatives in cosmetics may cause allergic reactions in some people. Symptoms include redness, itching, and swelling after the product comes in contact with the person's skin. Treatment typically involves the use of over-the-counter cortisone creams.
Insect Sting Allergies
The majority of stinging insects in the United States are from bees, yellow jackets, hornets, wasps, and fire ants. Severity of reactions to stings varies greatly. Avoidance and prompt treatment are essential. In selected cases, allergy injection therapy is highly effective.
Hay Fever (Allergic Rhinitis)
Hay fever (allergic rhinitis) is an irritation of the nose caused by pollen and is associated with the following allergic symptoms: nasal congestion, runny nose, sneezing, eye and nose itching, and tearing eyes. Avoidance of known allergens is the recommended treatment, but if this is not possible, antihistamines, decongestants, and nasal sprays may help alleviate symptoms.
Cold, Flu, Allergy Treatments
Before treating a cold, the flu, or allergies with over-the-counter (OTC) medications, it's important to know what's causing the symptoms, which symptoms one wishes to relieve, and the active ingredients in the OTC product. Taking products that only contain the medications needed for relieving your symptoms prevents ingestion of unnecessary medications and reduces the chances of side effects.
About 1% to 2% of people in the U.S. have a peanut allergy. Symptoms and signs of a peanut allergy include rash, hives, redness, and itching. Severe reactions may cause difficulty breathing, nausea, decreased blood pressure, lightheadedness, and behavioral changes. People with a peanut allergy should carry an epinephrine auto-injector with them at all times.
Sinus Infection vs. Allergies
Both sinus infections and allergies (allergic rhinitis) cause symptoms such as runny or stuffy nose and fatigue. Sinus infection (known as sinusitis) is inflammation of the sinuses, caused by infection from bacteria, viruses, and/or fungi (molds). Allergic rhinitis occurs when certain allergies cause nasal symptoms. When a person with allergies breathes in an allergen, such as pollen, dust, or animal dander, symptoms such as runny or stuffy nose, itching, sneezing, and fatigue occur.
The allergic cascade refers to allergic reactions that happen in the body in response to allergens. A variety of immune cells and chemical messengers participate in the allergic cascade. Symptoms of the allergic cascade range from mild swelling and itching to full-blown anaphylactic shock. Allergen avoidance and medications are used to prevent or treat allergies.
The most common food allergies are to eggs, nuts, milk, peanuts, fish, shellfish, strawberries and tomatoes. Symptoms and signs include nausea, vomiting, diarrhea, abdominal pain, itching, hives, eczema, asthma, lightheadedness, and anaphylaxis. Allergy skin tests, RAST, and ELISA tests may be used to diagnose a food allergy. Though dietary avoidance may be sufficient treatment for mild allergies, the use of an Epipen may be necessary for severe food allergies.
Allergy Treatment Begins At Home
Avoiding allergy triggers at home is one of the best ways to prevent allergy symptoms. Controlling temperature, humidity, and ventilation are a few ways to allergy-proof the home. Cleaning, vacuuming, and using HEPA air filters also helps control allergies.
Drug Allergy (Medication Allergy)
Drug or medication allergies are caused when the immune system mistakenly creates an immune response to a medication. Symptoms of a drug allergic reaction include: Hives Rash Itchy skin or eyes Dizziness Nausea Diarrhea Fainting Anxiety The most common drugs that people are allergic to include: Penicillins and penicillin type drugs Sulfa drugs Insulin Iodine Treatment may involve antihistamines or corticosteroids. An Epipen may be used for life-threatening anaphylactic symptoms.
Latex allergy is a condition where the body reacts to latex, a natural product derived from the rubber tree. The reaction can either be delayed and cause a skin rash or immediate, which can lead to anaphylaxis. Avoiding latex is the most effective way to prevent an allergic reaction.
Treatment & Diagnosis
- Food Allergy
- Latex Allergy
- Allergy Attacks? Fight Back
- Insect Sting Allergy
- Allergies: Spring Allergies -- Gailen D. Marshall Jr., MD, PhD -- 04/03/03
- Allergy: Taking the Sting Out of Insect Allergies
- Peanut and Other Food Allergies -- Scott Sicherer, MD
- Asthma and Allergies and Your Child
- Allergy: Winning the War Against Allergies
- Allergies- Easing Sneezing: House Cleaning Tips
- Allergies: Mold and More:Battling Indoor Allergens
- Allergies, Control Your Spring
- Allergies FAQs
- Questions To Ask Your Doctor - Allergy
- Air Pollution and Allergies: A Connection?
- Allergies: Don't Sneeze at Allergy Relief
- Food Allergies vs. Food Intolerance
- Sesame Seed Allergy: A Growing Problem?
- Skin: Are Hypoallergenic Cosmetics Really Better?
- Are Hives Always Caused by an Allergy?
- What Are Strategies to Deal With Mite Allergies ?
- Do Anti-Mite Carpet Cleaners Help Mite Allergies?
- Can Milk Allergy Cause Rheumatoid Arthritis?
- What Can You Give a Toddler for Severe Cough?
- Can You Be Allergic to Ceclor for Hepatitis B?
- Can Psoriasis Be Caused by Allergy?
- Do Allergy Drugs Interact with Synthroid?
- Allergy to Stinging Insects Can Be Life Threatening
- 5 Food Allergy Myths
- Food Allergy: The Facts
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Professional side effects and drug interactions sections courtesy of the U.S. Food and Drug Administration.